TY - JOUR
T1 - Decision directed scheme for IQ imbalance compensation on OFCDM direct conversion receiver
AU - Yuba, Tadaaki
AU - Sanada, Yukitoshi
PY - 2006/1
Y1 - 2006/1
N2 - Recently, the direct conversion scheme has been actively investigated for the purpose of cost miniaturization and low power consumption of wireless receivers. IQ imbalance is one of the problems for the direct conversion receiver. In the case of OFCDM modulations, this IQ imbalance causes intercarrier interference (ICI) in the demodulated signals. In this paper, the decision directed scheme for IQ imbalance compensation is proposed. In the proposed scheme, the combination of received symbols which satisfies orthogonality conditions is used for compensation of IQ imbalance. Therefore, in addition to the pilot symbols, the received symbols can be used in order to improve the accuracy of the compensation matrix and BER can be reduced.
AB - Recently, the direct conversion scheme has been actively investigated for the purpose of cost miniaturization and low power consumption of wireless receivers. IQ imbalance is one of the problems for the direct conversion receiver. In the case of OFCDM modulations, this IQ imbalance causes intercarrier interference (ICI) in the demodulated signals. In this paper, the decision directed scheme for IQ imbalance compensation is proposed. In the proposed scheme, the combination of received symbols which satisfies orthogonality conditions is used for compensation of IQ imbalance. Therefore, in addition to the pilot symbols, the received symbols can be used in order to improve the accuracy of the compensation matrix and BER can be reduced.
KW - Direct conversion
KW - IQ imbalance
KW - OFCDM
UR - http://www.scopus.com/inward/record.url?scp=32244435320&partnerID=8YFLogxK
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U2 - 10.1093/ietcom/e89-b.1.184
DO - 10.1093/ietcom/e89-b.1.184
M3 - Article
AN - SCOPUS:32244435320
SN - 0916-8516
VL - E89-B
SP - 184
EP - 190
JO - IEICE Transactions on Communications
JF - IEICE Transactions on Communications
IS - 1
ER -